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No raster no audio,Zenith SJ 2065S5




By Goodwrench on Sep 18, 2007

" "
No Raster no audio.The horizontal output transistor gets very hot..Please advise

Solution #1

posted on Sep 19, 2007
Somewhat Helpful)

modern

Rank: Wiz 
Rating: 80%, 660 votes
as horizontal transistor gets very hot so no eht so no raster &no sound due to nosupply to vif & tuner.
as hor output is getting hot please isolate supply to hor. section & check power supply output is ok as due to high voltage h/outout may get hot & demaged.
if supply is ok check for leaky or short parts in hor output.
1 hor. output transistor itself if it is replaced that may not be of proper matching.
2 diode& cap.in eht section.
3 clean print near eht.
4 moisture near yoke due to rain in rainy season only. so keep it hot for few hours.
5 at last if all are ok
eht or fly back transformer.
re connect power to hor output after rectification
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Solution #2

posted on Sep 20, 2007
Not Rated)

guly

Rank: Wiz 
Rating: 80%, 100 votes
1. the tester set to 250 up dc vlts
2. the neg - grn of the tester put the grn - in the picture tube
3 the pos.+ of the tester test to colector of the output transistor center legs the (H OUT)
4.look for the 120 or 130 vltsDC if the supply is normal. set the tester to 10 AC vlts test the pos.+ of the tester to BASE. and power on if no supply for AC. no oscillation check the jungle IC good luck
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